Car Sound Insulation Cotton Soundproofing Noise MatCar Sound Insulation Cotton Soundproofing Noise Mat Self Adhesive Retardant Features: Universal fits for most car models. It can be used as thermal insulation in dissipating heat, reduce energy consumption of air conditioning, save fuel and make your car cooler in summer and warmer in winter. Excellent sound absorption properties & good vibration resistance,it can reduce ambient wind, road noise and engine noise. Can make the heat of the engine evenly